Potato masher



FIG. 1 is a top, front, right side perspective view of the potato masher showing my new design;

FIG. 2 is a right side elevational view thereof, the opposite side being a mirror image;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a bottom plan view thereof;

FIG. 6 is a rear elevational view thereof; and

FIG. 7 is a perspective view thereof in an alternate position. 

The ornamental design for a potato masher, as shown and described. 